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From Ted Dunning <ted.dunn...@gmail.com>
Subject Re: problems on EC2?
Date Wed, 15 Apr 2009 01:34:06 GMT
Very good pointer.  Thanks.

Are you still having your problems?

On Tue, Apr 14, 2009 at 6:09 PM, Nitay <nitayj@gmail.com> wrote:

> Hi Ted,
>
> Fellow user coming from HBase. We were recently seeing lots of
> SessionExpired events as well. Check out this mail thread:
>
>
> http://markmail.org/search/?q=SessionExpired#query:SessionExpired+page:1+mid:gt4c2kn4n4f5s5kw+state:results
>
> Perhaps this might have something to do with what you're seeing.
>
> Cheers,
> -n
>
> On Tue, Apr 14, 2009 at 5:48 PM, Ted Dunning <ted.dunning@gmail.com>
> wrote:
>
> > We have been using EC2 as a substrate for our search cluster with
> zookeeper
> > as our coordination layer and have been seeing some strange problems.
> >
> > These problems seem to manifest around getting lots of anomalous
> > disconnects
> > and session expirations even though we have the timeout values set to 2
> > seconds on the server side and 5 seconds on the client side.
> >
> > Has anybody else been seeing this?
> >
> > Is this related to clock jumps in a virtualized setting?
> >
> > On a related note, what is best practice for handling session expiration?
> > Just deal with it as if it is a new start?
> >
>



-- 
Ted Dunning, CTO
DeepDyve

111 West Evelyn Ave. Ste. 202
Sunnyvale, CA 94086
www.deepdyve.com
858-414-0013 (m)
408-773-0220 (fax)

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